halloo
Concise Oxford English Dictionary © 2008 Oxford University Press:
halloo/haˈluː/
▶exclamation used to incite dogs to the chase during a hunt.
■ used to attract someone's attention.
▶noun a cry of ‘halloo’. ▶verb (halloos, hallooing, hallooed) cry or shout ‘halloo’.– origin C16: prob. from the obs. v. hallow ‘pursue or urge on with shouts’, from imitative OFr. haloer.
'halloo' also found in these Oxford entries:
